Diffuser



FIG. 1 is a top isometric view of a top portion of a diffuser;

FIG. 2 is an elevational view of a first side of the top portion of thediffuser of FIG. 1;

FIG. 3 is an elevational view of a second side of the top portion of thediffuser of FIG. 1, wherein the second side is opposite the first side;

FIG. 4 is an elevational view of a third side of the top portion of thediffuser of FIG. 1;

FIG. 5 is an elevational view of a fourth side of the top portion of thediffuser of FIG. 1, wherein the fourth side is opposite the third side;and,

FIG. 6 is a top plan view of the top portion of the diffuser of FIG. 1.

The subject matter shown in the broken lines in the figures in dashedlines is for illustrative purposes only and forms no part of the claimeddesign.

The ornamental design for a diffuser, as shown and described.